Machine for counterboring nuts



Jan. 29, 1924. 1,481,983 H. M. BRIGHTMAN v MACHINE FOR COUNTERBORING NUTS Filed Oct 28. 1921 3Shets-Sheet x F 5 1 INVENTOR.

HARRISON. M. BRiGH'IMAH Jan. 29, y M. BRIGHTMAN MACHINE FOR COUNTERBORING NUTS File t- 28. 1921 a Sheets-Shut a I l will 39 m a H I II I ll u I ll II l l 1| I h I I I! l l I INVENTORQ HARRISON M.BR1G1-1TM 1 1 Jan. 29, 1924. 1,48T5983 H. M. BRIGHTMAN MACHINE Foa COUNTERBORING NUTS File 28. 1921 5 Sheets-Sheet smmvrozz.

HARRISON MIBRLEHTMAH Patented Jan. 29; 192A.

'fBRIG-HTMAN, ONE-FGUREUH T9151.

eRIe'HT'MAN, ALL OF COLUMBUS, 021150.

MACHINE FOR. 'COUNTEefideItre mists.

Applicatibn filed 'o'ct'obe'r 28, 1921. serial ire/510990.

To all within it may concem:

Be it known that I, HARRISON M. BRIGHT- MAN, a citizen of the United States of America, 'i'esidiiig at Columbus, in the county pt- 6 Franklin and State of Ohio, have invented certain new and useful Improvements in Machines 5611' CoiinterborinQNflts, of which the following is specification.

My present invention relates particularly to machines for counterbering' nuts,iny object bein the provision of an appztiatus of this character and for this purpese which will be simple and inexpensive, entirely automatic in its operation, effective and 'eflicient iiiuse and Strong and dtifztble.

Other ebject s relating mere particularly to the details, as well as the resulting advanta es of my invention will clearl'ya'ppear in the cOu'r'Se of the following description, refere'nee being made to the team-- paiiying drawings, which form a jdart of this specification, and in which,

Figure 1 is a side elevatibn of my in prtji ed machine,

Figure 2 a freiit "elevatidncertain parts being emitted for better viettof'tlie feinztim in}; arts,

,"Figtir'e 3 detail vrtieel Seetidn taken emineweof Figure 2,

Fig'ilre 4 is a Vertical section taken 011 line of Figure 2,

' the parts SHOWD in Figure 4,

Fight-e6 ie a detail plan View Of certain of the bziitS shOWIi in Figufe 5,

Figfiife 7 is e Vertical sectieml View taken on line 7 7 of Figure 4, and r I Fig'i reS detail plan view (if ce ftitin of the parts slid'w'n in Fig'ilre' 5. e

Refefiihg ndi'v t d tlisefigures my i'i'iveii tion proposes a machine for counterboring mite whieh lri dl l ldes the main upright fia'me 10 having 5 forwardly projecting n tit ie ceiviiig tiay 11adjacentto its forward end mid havinv Above the tray 11 aiid es Shown p'ai't'ic'filarly in Figure 2, the upright fraifie 1081113- ports aiflztte 13 Whose lowe pofticn has 'fei'wziifclly outstanding ljeerii gig brackets" 14 61 av itorrh shaft 15 and On this worm Shaft ie, a worm wheel 16 eiipjttgcl bythe won'n 17 1? at hdriz mel sh'a'ft is whose which for avidly of the ilpright 10 e; jdu'rfiele'd in jchi'ntled in a poitioii of the befOrementTh'e d bieeleet- 12. This refupoition of ehtf't 18 alst) hits a ge'ti- 20 engaged the gea 121 0t a pulley shaft 22 on which pulley 23 and 24 fire iiibunted, the former being adapted to receive "a belt le'z't'di'ng re any Suitable sdiii'c e of better "and the letti' r' ceiviii g it belt 25 fo'r it piifpo'se to be pfesienfly desrib'ed. i

The shaft 15 has et one end a celli' 26 as She-wt in Figure 2 e1 271d ee1yfirs Oiithis shaft against the statiehery collzir 26 bird is engaged by a fi 'ictic fcoll ai' 28 disposed oh the h'aft and tightly against g'zi'r 27 to helcl the lattei' in fritidii'ztl en-. gegern'ent with the i'ig 'id cellar 26 means of it 5 5mg 29 and nuts 30thre2tded '0'11 the fiiaii's (if this fritiohtlljy held eti? 2 7 f'dtai-tien is ti'aiififittecl "shift 15 to the cam shtft 31 p iztllel with zifncl above the heft 15, gee meme-31mg the deer '32 Se'cuied on the ctih 'shz i ft. At diie en d the cziiiisheft 31 e betel greet 33 engz'tgin g a betel *geei 4 at the lower em 6f zth up Wtrdly stiid i eefwzti dlji ir'ielin ed 35 which as seen n Fig-firel miete e its zipper ieai ehd kt bevel g elar 36 nge'gingtfie bevel gear 37 zit ofie end bf ettip The Shaft 318 is; jammed in beetri ilg siwithiii tififir'fiaiiie 39 iioiiiite d t em a? the uprigh 10 an the frame Hes; fii'rivii dlj (iiit sttfidiiig beefing efin which deppejmte wi beam; ime 4 g teritli ngi fo'i tvziif-tlli trbih vthe upper jjprtl; of the befeieiiientidnd plgite 133th 1; a pert Vertical epimns; 12 which i'r'e'bethlfotatzthle efiid lefigi'thviise shift ble. Seyerltl of swindle m y b e e' i' 5 eF e r bet While dapable 6f multipl jetie r in mimbee a single epi'tdie is 511 that is esfseQ-f tie] and tliem achine will be so treated iii the (le'sciibtich fe'lldifiihg} I V K I The eef mi off the (1:111 ied-1e, en e; a bim -b r t nd uvont 'e pee pert-ion of tl l e SpiI ldh bgve the bearin 106f the iipper frzti hel3 9 a pulley 4.4;i's Sfih fe'd 6n the Spindle; and receives elr'ieelid of the bl t 2'5 eiteiidi g from the eplndle driving fii-illy 2 1; ai eu'ri'tl 2t game teller 4'5.

adapted to intermittently act upon a rotat- The upperend of the spindle a2 is engaged by a trip, lever t6 with respect to which the spindle is freely rotatable, this trip lever being journaled at its inner end upon a rod 4:? and having an inward extension 48 which when depressed by the finger cam 49 of the rotatable trip shaft 38, raises the spindle 42 from the lower active position of Figs. 1 and 2 to the inactive position of Fig. 3. The

extension d8 of the trip lever 46 is also en- I gaged by the inner end of a controlling lever 50, the latter journaled on a rod 51 and having upon its outer end an adjustable weight 52 so that when the finger cam L9 passes the extension of the trip lever, the weighted controlling arm or lever acts on the trip lever to again lower thespindle into active position under tension of the adjust-able weight 52.

0n the cam shaft 31 below each spindle i2- is a spiral cam 53 having a cam rib grouped around the axis of the rotating feed member the latter of which is rotatable on an upright stem 57 the lower end of which is fixed in the forward portion of a bracket 58,'and depends through a disk 59 having thereon a renewable wear plate 60 on which the feed plate or table 5% rests. Disk 59 and its renewable wear plate 60 are cut away at oneside as at 61 in Figure 8, above the chambered'upper portion 62 of bracket 58, the base of which. chambered portion slopes downwardly and rearwardly to a nut dis charge chute 63 opening above the nutre ceiving tray 11 before mentioned.

The bracket 58' is vertically adjustably connected to the front plate 13 of the upright by means of an adjusting bolt 64 and clamping'bolts 65 so as to adjust the rotating feed table 54 with respect to'the lower counterboring tool 43 of the spindle 42, and the feed table 54 is vertically yieldable on the stem 57 byvirtue of a spring 66 around the upper portion ofthe stem 57, held by adjusting nuts 67 and engaging the upper portion of the hub 68 of said feed table.

Thus in operation nuts placed within the nut holding'bores 56 of the feed table 5d at the front of the machine and while the feed table is stationary, are advanced successivelv to the rear during rotation of the feed tab-1e under actuation of the constantly rotating spiral cam 53. The parts are so timed that during each period of rotation of the feed table the respective spindle 42 will be in uppermost position with the actuating finger cam if) in operation as seen in ure 3 and this timing is by virtue of the gearing connections through the inclined shaft 35 between the cam shaft 31 and the trip shaft 38. Each time the feed table 54 comes to rest with one of its nut holding bores 56 in vertical line beneaththe spindle 42, the latter lowers into active position and its constant rotation causes it to immediately proceed with the cutting of the counterbore at one end of the nut, into which it advances until the finger cam again lifts the spindle and the feed table is again partially rotated.

It will be noted that during this operation the nut rests upon the renewable plate 60 above its supporting disk 59 and it is obvious from an inspection of Figures 5, 6 and S in particular that after being acted upon each nut is shifted, during rotation of the 'feed table, to a point above the cutaway portion 61 of plate 60 and disk 59. At this point the nut is free to drop through the respective bore 56 and through the cutaway portion 61 into the chambered upper portion 62 of the bracket 58 upon the base of which chambered portion 62 the nut slides downwardly to the discharge chute 63 through which it falls into the tray 11.

By virtue of the possible multiplication of the spindles and feed tables, as well as the character of the work, it is obviously quite possible that in operation careless placement of nutswill result at times in the falling of nuts between the feed tables causing a binding of the parts which would except inthe event of some relief bring about serious results. It is for this reason that I provide the frictionally held gear 27 so that in the above or other dangerous situation this gear may simply'slip on the worm shaft until the obstruction or obstructions are removed.

It is also to be observed. that in view of the fact that the nuts in the bores of the feed table slide upon the upper face of the renewable plate 60, imperfect nuts may at times catch and bind although 'I- have provided for relief inthis event by allowing the feed table to ield vertically against the tension of spring 66.

, Thus it is obvious that while generally of a simple. inexpensive construction, the machine as provided by my invention will effectively and efficiently carry out the objects of the invention and will be strong, durable and automatic in its action.

I claim: v

1. In combination with a rotatable nut supporting feed table, a rotatable and vertically shiftable spindle having a counterboring tool andbeneath which the nut hold ing means of the feed table are successively shiftable, means in rotatable connection wit the spindle for shifting the same vertically, including a shifting lever, adjustable weightcontrolled means engaging the lever for thrusting the spindle downwardly, a trip ping cam engageable with the lever for raising the spindle, and gearing connections between the tripping cam and the feed table rotating means as described.

2. A. machine for counterboring nuts including a horizontally disposed rotatable feed table having nut holding means and provided with depending pins, a cam shaft beneath the feed table, a cam on the said shaft successively engageable with the said pins to intermittentl rotate the feed table, a rotatable and vertically shiftable spindle above the feed table and beneath which the nut holding means of the feed table are successively movable, means to continuously rotate the spindle, a lever having a rotatable connection with the spindle for controlling its vertical position, means engaging the lever to hold the spindle in lowermost position, tripping means also engaging the lever for elevating the spindle, and gearing connections between the said cam shaft and the tripping means whereby to render the latter active during each rotative movement of the feed table.

3. A machine for counterboring nuts comprising a rotatable nut holding feed table, connections for imparting intermittent rocation to the feed table, a rotatable and table rotating means and the spindle raising 7 means including a trictionally supported gear yieldable upon obstruction to the rotation of the feed table whereby to avoid breakage of parts as described.

4-. In a machine of the character described, a rotatable and vertically shiftable spindle, an intermittently rotating feed table below the spindle having an annular series of nut holding bores, a vertical stem on which the feed table is rotatable, means to intermittently rotate the feed table, and a support for the feed table including a plate beneath and upon which the feed table rests, which forms a support for nuts within the bores to the feed table and is cut away at one point to permit nuts to drop through the bores, said feed table being yieldable vertically on the stem away from the nut supporting plate for the purpose described.

In testimony whereof I have atiixed my signature.

HARRISON M. BRIGHTMAN. 

